What happens to living things as the world around them changes?

The actors spoke loudly clearly and confidently. punctuate this sentence using the oxford comma

Which theme do all rivers run to the sea and maus share?

Which detail from the text best demonstrates the effect of totalitarianism on the animals? "progress was made in the dry frosty weather that followed." "it had been decided to build the walls three feet thick." "they were always cold, and usually hungry as well." "for a long time the quarry was full of snowdrifts and nothing could be done."